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SELECT 
  b.variant_name, 
  a.*, 
  IF(
    shared_option_variants.variant_id IS NOT NULL, 
    shared_option_variants.modifier, 
    a.modifier
  ) as modifier, 
  IF(
    shared_option_variants.variant_id IS NOT NULL, 
    shared_option_variants.modifier_type, 
    a.modifier_type
  ) as modifier_type 
FROM 
  cscart_product_option_variants AS a 
  LEFT JOIN cscart_product_option_variants_descriptions AS b ON b.variant_id = a.variant_id 
  AND b.lang_code = 'en' 
  LEFT JOIN cscart_ult_product_option_variants shared_option_variants ON shared_option_variants.variant_id = a.variant_id 
  AND shared_option_variants.company_id = 1 
WHERE 
  1 
  AND a.option_id IN (
    78, 79, 80, 81, 68, 69, 70, 71, 72, 73, 74, 
    75
  ) 
  AND a.status = 'A' 
ORDER BY 
  a.position, 
  a.variant_id

Query time 0.00064

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "42.17"
    },
    "ordering_operation": {
      "using_filesort": true,
      "cost_info": {
        "sort_cost": "30.60"
      },
      "nested_loop": [
        {
          "table": {
            "table_name": "shared_option_variants",
            "access_type": "system",
            "possible_keys": [
              "PRIMARY",
              "company_id"
            ],
            "rows_examined_per_scan": 0,
            "rows_produced_per_join": 1,
            "filtered": "0.00",
            "const_row_not_found": true,
            "cost_info": {
              "read_cost": "0.00",
              "eval_cost": "0.10",
              "prefix_cost": "0.00",
              "data_read_per_join": "24"
            },
            "used_columns": [
              "variant_id",
              "company_id",
              "modifier",
              "modifier_type"
            ]
          }
        },
        {
          "table": {
            "table_name": "a",
            "access_type": "ALL",
            "possible_keys": [
              "status",
              "option_id",
              "option_id_2"
            ],
            "rows_examined_per_scan": 78,
            "rows_produced_per_join": 30,
            "filtered": "39.23",
            "cost_info": {
              "read_cost": "5.45",
              "eval_cost": "3.06",
              "prefix_cost": "8.51",
              "data_read_per_join": "24K"
            },
            "used_columns": [
              "variant_id",
              "option_id",
              "position",
              "modifier",
              "modifier_type",
              "weight_modifier",
              "weight_modifier_type",
              "point_modifier",
              "point_modifier_type",
              "status",
              "yml2_variant"
            ],
            "attached_condition": "((`gaseus`.`a`.`option_id` in (78,79,80,81,68,69,70,71,72,73,74,75)) and (`gaseus`.`a`.`status` = 'A'))"
          }
        },
        {
          "table": {
            "table_name": "b",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "gaseus.a.variant_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 30,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "0.00",
              "eval_cost": "3.06",
              "prefix_cost": "11.57",
              "data_read_per_join": "23K"
            },
            "used_columns": [
              "variant_id",
              "lang_code",
              "variant_name"
            ]
          }
        }
      ]
    }
  }
}

Result

variant_name	variant_id	option_id	position	modifier	modifier_type	weight_modifier	weight_modifier_type	point_modifier_type	status
One	470	68	10	0.000	A	0.000	A	A	A
Base	475	69	10	0.000	A	0.000	A	A	A
Standard	478	70	10	0.000	A	0.000	A	A	A
Normal	480	71	10	0.000	A	0.000	A	A	A
Red	482	72	10	0.000	A	0.000	A	A	A
Option 1	485	73	10	0.000	A	0.000	A	A	A
A	492	78	10	0.000	A	0.000	A	A	A
Red	495	80	10	0.000	A	0.000	A	A	A
Type A	497	81	10	0.000	A	0.000	A	A	A
Two	471	68	20	0.000	A	0.000	A	A	A
Plus 10	476	69	20	10.000	A	0.000	A	A	A
Add 10 percent	479	70	20	10.000	P	0.000	A	A	A
Heavy	481	71	20	0.000	A	2.000	A	A	A
Blue]	483	72	20	0.000	A	0.000	A	A	A
Option 2	486	73	20	0.000	A	0.000	A	A	A
B	493	78	20	0.000	A	0.000	A	A	A
Blue	496	80	20	0.000	A	0.000	A	A	A
Type B]	498	81	20	0.000	A	0.000	A	A	A
Three]	472	68	30	0.000	A	0.000	A	A	A
Plus 20	477	69	30	20.000	A	0.000	A	A	A
Large	484	72	30	0.000	A	0.000	A	A	A
Option 3	487	73	30	0.000	A	0.000	A	A	A
C	494	78	30	0.000	A	0.000	A	A	A
Size 2]	499	81	30	0.000	A	0.000	A	A	A
Beta	473	68	40	0.000	A	0.000	A	A	A
Yes	500	81	40	20.000	A	0.000	A	A	A
Gamma	474	68	50	0.000	A	0.000	A	A	A
Ball	501	81	50	25.000	A	0.000	A	A	A
Diaphragm	502	81	60	40.000	A	0.000	A	A	A